See what most important for us in our professional and social life are our OBJECTIVES/GOALS that inspire us in our life at every stage of and help us to run and achieve the same.
And, you are actually distracted, your confidence level is also shattered now because of failure in your business, which resulted demotivation, therefore, what you require most in that case is to set your career objective first.
You have to decide what you want to do in your life. If you feel that, you can go for your own business but currently want a job, which can fulfill the motive of investment or give you some experience than you have to set a target of period for the achievement of this goal too. You actually have to sit and plan for your professional/career life.
Second, you certainly can go back to your HR profile but for this you have to recover, you could have earned the loss of knowledge and experience from this period you were out of job. Work to get strong your knowledge, apply for the job and need to be ready to answer your recruiters on the same decision of your leave Job and to go for Business.
You can also start with recruiting profile and for this, I’d suggest you to please forget the past, think about your present for future, put your sincere effort and give a new start by learning from your past mistakes
"The past is behind, learn from it.
The future is ahead, prepare for it.
The present is here, live it.
~ Thomas S. Monson"
Best of Luck